Shootout: AMR CD-77 vs. AR CD7 vs. Wadia 581se


Last week I had the pleasure of comparing three highly regarded CD players: the Audio Research Reference CD7, the Wadia 581se, and the Abbingdon Music Research (AMR) CD-77. While I am an audio manufacturers representative, I haven’t any dogs in this race (I have no financial, personal, or any other type of relationship with any of these manufacturers or their representatives). I have been considering upgrading the front end of my own system and had read quite a bit about the AMR, a small new company whose products I had never seen nor heard, only read about. Since the reviews of the unit were so positive, I decided to check it out for myself. The importer, Avatar Acoustics, put me in touch with there southern California representative, Brian Kyle of Xtreme AV. Brian was most gracious and allowed me to take an AMR CD-77 for a few days to evaluate. The particular unit Brian gave me had the latest output coupling capacitors, which I was told, made a substantial improvement over earlier units. Additionally, each of the six tubes in this unit only had one tube dampener on it. The AMR was designed (“voiced”) with two tube dampeners on each tube. Brian had removed one dampener from each tube in order to “adjust” the sound to his particular system (an obvious advantage of tubes). In his system, it sounded excellent, but more on that later…

With Brian’s unit in hand, I drove directly to an outstanding audio shop in San Diego that had both of the other units I was interested in comparing. The AR CD7 was in their “all AR” room, and the Wadia was set up in another room with Krell Evolution gear. On each system, I first listened to the CD player already hooked up, and then to the AMR. The same interconnects (top of the line Transparent Audio) and power cords were used for each machine to keep the playing field even. Lastly, I made sure that all of the equipment was warmed-up sufficiently.

The first system was composed of the following components:

AR Reference CD7
AR Reference 3 preamplifier
Two AR 610T power amplifiers (mono-blocks)
Wilson Maxx Series 2 speakers

On this system, the AR Ref 7 sounded lush and warm (remember, all the electronics are AR’s top-of-the-line tube gear, and that “warm” sound was expected). There was absolutely no hint of the dreaded “digital” glare that plagues so many other CD players. The system presented a convincing soundstage with very good presence. The midrange was excellent. Extreme highs & lows however, were lacking. After listening for a while, I realized that this “warm” sound (that was so seductive when I first started listening) was masking out the upper end detail that I knew should be there. Additionally, there should have been more mid and low-end bass. While the mid-range was strong, the over-all sound was tight and “compressed”. There was no sense of naturalness or openness in the music. Voices lacked the detail to make them believable. With my eyes closed, I wanted to be drawn into the performance; to be in front of the musicians. What I experienced was a powerful, overly warm audio system – the performers were never in the room with me.

Using the same cables, we swapped out the AMR. The difference was startling! That compressed dark sound was gone. The top end completely opened up and the detail was suddenly there. The low end also came out with weight and mass, but not exaggerated. Thankfully, there was no digital glare either! The AMR handled all the subtleties and dynamics beautifully. While the system still had that “warm” tube sound, the music had taken on a far more natural quality.

The second system was composed of the following components:

Wadia 581se
Krell Evolution 202 preamplifier
Krell Evolution 302 amplifier
Wilson Alexandria X2 speakers

As one would expect, nothing “warm” sounding here! This system had it all - lows, middle & highs, everything was there. Unfortunately, that includes a very digital sounding upper end. In fact the system was so resolving, that I found it hard to listen to (even though I know the associated electronics “added” to the sound, I will keep my comments limited to the CD players). Forgetting the digital sound for a moment, what came out of the Wadia was excellent. The high end was accurate and extended. Midrange was delicate and engaging. The low end was also strong and entirely there. Everything was as it should be, except that pesky digital glare…

Upon exchanging the AMR for the Wadia, the music (almost) sounded the same, but this time WITHOUT the digital glare! What a huge improvement! I don’t want to sound like an advertisement or something, but I was really impressed. From top to bottom, this unit did everything the Wadia did, but with the analogue sound of vinyl – no digital artifacts whatsoever.

When I got the AMR home and hooked up to my system, I was floored again. Music from this machine is engaging and full, as if it has layers. Bass reproduction is far superior to anything else I have hooked up at home. I had never heard bass like this from a CD player. The midrange was detailed, open and accurate. No digital glare from this unit at all. My CD’s sounded like they were vinyl - I didn’t want to stop listening. It was pure joy listening to music through it!

Now that I told you all of the things I enjoyed, I’ll tell you a few things I didn’t like about it. The AMR is big and heavy. Let me rephrase that; this thing can give you a hernia! I’m told that all that weight helps keep out vibrations. If you have to move the unit around a lot (as I do), you will have to keep eating your vitamins! I wasn’t terribly impressed with the styling of the unit either. At $8,500.00, I want the machine to look as great as it sounds. Some may like the styling, I didn’t care for it. In regards to what is important, the music, I did find one weakness: The upper end of the music seemed to be a bit thin – lacking in fullness or weight. Yes, I’m being critical, but it was audible. After returning the unit to Brian, it was explained to me that this lack of weight in the upper end was do to the second set of tube dampeners not being installed. This explanation makes sense to me. I didn’t notice the thinness at Brian’s home (all warm sounding tube gear) or while listening to the AR equipment. Perhaps I heard it while listening through the Krell system, but I would have attributed it to the sound of the Krell equipment itself. Adding or subtracting dampeners or changing the tubes themselves will have a profound effect upon the sound. I am fairly confident that the second set of dampeners (as designed) would have corrected this slight shortcoming on my system.

As far as I am concerned, this is an outstanding machine. My criticisms are negligible especially when considering the price of the AMR. Unless I can find a machine that sounds as good and easier to pick up, this is the unit I will be buying.
Ken G.
kgproperties
What would be your home system K? Anything like the above first or second system? And now do you have synergy? Apologies if your system is listed, I did look around.

Nothing wrong with making the dealer work by lugging around a heavy CD player or amp etc. One of their (B%M) values is being able to mix up their equipment for your ear's benefit. I even enjoy watching the salespeople that are smokers huff and puff. The effort maybe even does them some good.

No offense to all the good smokers on Audiogon.
The dude compared 3 CD players, you'd think he committed a felony.

FWIW: AMR CD-77 got a nice write-up in #56 January Hi Fi+ Canadian Mag.
Very interesting comparisons you made and thanks for posting your thoughts here for the perusal of others.
Please be reassured however that the vast majority who read what you posted will be neither so pedantic nor critical as some of those who have made comments.

You never stated this was a 'shoot out' or a definitive assessment of any player, and obviously you were well aware of the varying strengths/weaknesses of each system you placed the CD-77 in. Ancillary components were listed and I'm sure we all have experience of Krell and AR amplification and what the resultant sound will be like?

Evaluating the AMR-77 as you did is far, far better than just doing so at home, in your own system, as if for instance you thought the CD-77 was overly lush or lacking in bottom end through your own system you can draw on what it was like in the other two systems and realise that the fault lay in your amps/speakers/cables.

When it comes to purchasing a component obviously nobody should do so unless they have heard it in their own system, but you have done this whilst also gaining valuable additional experience of the CD-77 in two systems of almost diametrically opposed qualities.

You should be congratulated so once again, thank you for taking the time to share what you heard.
Thanks again for all the feedback. Differing points of view have always been a part of this hobby/obsession. There were two comments I wanted to respond to; namely how many hours were on the units I evaluated, and the components my own system is comprised of.

After checking back with the dealer, I was informed the AR machine had been on display for about five months, and the Wadia about four months. I know that most dealers will burn-in new machines when they arrive to assure their equipment is sounding its best. After four plus months, I would be reasonably confident that both these machines were “broken in”. The AMR unit was also fully broken in as it was one of the early arrivals. The new output coupling capacitors were only in the machine for a few weeks, but had been burnt-in by the capacitor manufacturer prior to being installed in the AMR.

In regards to my own system, the primary components are:
Viola Cadenza preamplifier
Cello Audio Palette
2 Cello Duet 350’s (bridged)
Cello Grandmaster speakers (with the Dynaudio drivers)
All interconnects fully balanced Viola silver, or Cello Strings
Power is supplied by four dedicated 20 amp lines (fed by ceramic fuses – not circuit breakers) using #10 THHN solid core copper wire into cryoed Hubble hospital-grade receptacles.

The only weak portion of the system is the front-end, which is currently a Camelot Roundtable MK II. With the AMR inserted into my system, (other than my previous comments) the results were breathtaking…
Kgproperties,
I have had experience with the AMR and must say that it is a very naturally engaging player that is exceptionally well voiced from top to bottom. Imaging is very dimensional and portrays good front to back as well as side to side soundstage portrayal.I was very impressed with the fit and finish of the player. I think you did a good job of reporting what you heard in each system and people may form their own opinions about the said playback systems. I really like your system set up and good luck in your front end search ( sounds like you heard a clear winner).Cheers Dennis